This is a pair of 10mm ear plugs. 00 Gauge Sons of Anarchy Plugs. Licensed Sons of Anarchy body jewelry. Sons of Anarchy is a TV series about an outlaw motorcycle club operating in a fictional town in California.. Specifications: 00 Gauge (10mm) Officially licensed, Sold as a Pair, 316L Surgical Steel, Screw Fit Plug. 00 Gauge Surgical Steel Sons of Anarchy Skull Hand SAMCRO Screw Fit Plug Set